Headset



FIG. 1 is a front perspective view thereof;

FIG. 2 is front elevation thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a left elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a rear perspective view thereof.

The dashed broken lines in the figures are for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a headset, as shown and described. 